Newtek's Crown jewel these days seems to be the Tricaster. They're popping up quite a lot.
As far as editing is concerned Final cut, Avid, and Adobe Premiere are Kings. Just like 3dsMax and Maya are kings of the 3DWorld.
Still, Lightwave and the modern Video Toaster pop up everywhere. Unfortunatley, more often than not mentioning NewTek get you that "oh yeah... that company.." remark. Yet anything Apple touches appears to become blessed.
SpeedEDIT was VTEdit unbundled from the Video Toaster. It's called SpeedEDIT becuase it's fast in that you don't have to transcode any video, (supports most every video format PC and MAC) wheras Final Cut, Avid, Preimiere have to transcode the video into another codec for use in their editors.
Even so, SpeedEDIT is marketed as another tool for editors to add to their arsenal, not a Final Cut killer.